As a WordPress admin, you need to take time to maintain your website or you are going to end up with issues. Just because you are doing things in the background, it does not mean your visitors should see the changes you are making. Easy Pie Maintenance Mode for WordPress is a cool plugin that lets you put your website under construction temporarily.
Easy Pie Maintenance Mode makes putting your website in maintenance mode easy. There are no complex steps for you to take. You can add your own logo and use the included mini themes to get started. This is a free plugin.